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A205172 Primes p == 5 (mod 8) such that p + 2 is also prime. 2
5, 29, 101, 149, 197, 269, 461, 821, 1061, 1229, 1277, 1301, 1877, 1949, 1997, 2141, 2237, 2309, 2381, 2549, 2789, 3389, 3461, 3557, 3581, 3821, 3917, 4157, 4229, 4421, 4517, 4637, 5021, 5477, 5501, 5741, 6197, 6269, 6701, 6869, 7349, 7589, 7757, 7877 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The lesser of twin primes == 5 (mod 8).

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

select(t -> isprime(t) and isprime(t+2), [seq(i, i=5..10000, 8)]); # Robert Israel, Nov 25 2019

MATHEMATICA

Select[ Prime@ Range@ 1000, Mod[#, 8] == 5 && PrimeQ[# + 2] &]

PROG

(PARI) forprime(p=1, 7900, if(Mod(p, 8)==5 && ispseudoprime(p+2), print1(p, ", "))) \\ Felix Fröhlich, Nov 25 2019

CROSSREFS

Cf. A071695, A205171.

Sequence in context: A197276 A211062 A264750 * A139856 A097345 A097344

Adjacent sequences:  A205169 A205170 A205171 * A205173 A205174 A205175

KEYWORD

easy,nonn,changed

AUTHOR

Robert G. Wilson v, Jan 22 2012

STATUS

approved

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Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)